In 2008, Usain Bolt became the fastest man in the world. He won three gold medals at the Beijing Olympic Games that year - and he did it again in 2012, and in 2016. So how did a boy from a little Jamaican village become the world's greatest athlete? And why do his fans love him so much?

Kate loves singing and playing her guitar - and she's good, too. One Saturday, she goes to the town square with her friend Lucy, and plays there. It's a big thing, playing in front of people, and Kate isn't the only street performer in the square that day. The silver statue is there, and that's OK because she never moves or speaks. But Joe the drummer is there too, and Kate's music and Joe's drums aren't good together. Or are they?

It is early morning on a warm day in Roman Italy. Sixteen-year-old Tiro gets the water, makes breakfast, and works in the kitchen - like he does day after day. Tiro is a slave. But today is different. He is going to Pompeii for the first time. He is excited, but it is AD 79: and on Mount Vesuvius, very bad things are beginning to happen...

Malala loved going to school. But in Pakistan, the Taliban became very important and they did not want girls to have an education. Malala was not afraid to speak out against the Taliban. In 2012, she was shot in the head and survived, and now more than ever she wants to fight for education for every child.

'I'm afraid to look in the storeroom. All our food for the winter - where is it now? Inside those hungry guests! They never stop eating! And they never say thank you! And those children - my God, they eat more than their parents!'